ABSTRACT
This chapter considers the service meters; equipped with totalizers, these meters count up the flow as it passes through the unit - for estimating water demand, and for billing. Positive displacement meters are suitable for residential customers who experience low flows and long periods when no water is used. Turbine meters have a rotor in the measuring chamber which turns in response to the velocity of the water. Compound Meters are the most expensive of the service meters, but if 10-30% of the flow is on the small side, the savings achieved in recording those low flows will probably be worth the cost. Industry usually requires a continuous flow. Irrigation water is the largest demand, but is of short duration. To measure fire flow water, a proportional meter is used. For testing of firefighting equipment, these are installed onto fire hoses.
